57402313 has 2 divisors, whose sum is σ = 57402314. Its totient is φ = 57402312.

The previous prime is 57402311. The next prime is 57402361. The reversal of 57402313 is 31320475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57350329 + 51984 = 7573^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 57402313 - 2¹ = 57402311 is a prime.

Together with 57402311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57402311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28701156 + 28701157.

It is an arithmetic number, because the mean of its divisors is an integer number (28701157).

Almost surely, 2^57402313 is an apocalyptic number.

It is an amenable number.

57402313 is a deficient number, since it is larger than the sum of its proper divisors (1).

57402313 is an equidigital number, since it uses as much as digits as its factorization.

57402313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 57402313 is about 7576.4314159108. The cubic root of 57402313 is about 385.7534309935.

Adding to 57402313 its reverse (31320475), we get a palindrome (88722788).

The spelling of 57402313 in words is "fifty-seven million, four hundred two thousand, three hundred thirteen".